/usr/share/menu/xfwm4 is in xfwm4 4.12.4-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | ?package(xfwm4): needs="wm" section="Window Managers" command="xfwm4" \
title="XFwm" longtitle="Xfce Window Manager" hints="Window manager"
|